The fighting began in the early hours of Saturday morning.

战斗在星期六凌晨打响了。

《牛津词典》

The fighting began in the late afternoon and continued all night.

那场战斗傍晚开始，持续了一整夜。

《柯林斯英汉双解大词典》

Fighting began at seven in the morning.

战斗开始于早晨七点。

youdao

Fighting between the two sides almost began when a Free State man was killed by a pro-slavery man.

VOA: special.2009.05.07

The conflict began more than twenty-five years ago, when minority Tamils began fighting for an independent homeland.

VOA: special.2009.05.16

Other cities around the world also began to use this crime-fighting method.

VOA: special.2009.03.03

Since fighting began in Darfur in 2003, between 200, 000 and 400, 000 people have died.

NPR: Activists Host Darfur Observance Day in L.A.

Eleven U.S. troops and two Iraqis have been killed since fighting began, officials said Wednesday.

CNN: Troops find hostage 'slaughterhouses' in Falluja

They've suffered more losses than any other regiment ever stationed in Afghanistan since fighting began in 2001.

BBC: Newsbeat - The P Word - British troops on losing colleagues